function preload (arrBild) {
    var arrImg = new Array(arrBild.length);
    for (var i=0; arrBild.length > i; i++) {
        arrImg[i] = new Image();
        arrImg[i].src = arrBild[i];
    }
}

function preloadJakobs () {
    var arrWindow = ["images/w_19m.jpg", "images/w_20w.jpg", "images/w_20m.jpg", "images/w_21hw.jpg", "images/w_21hm.jpg", "images/w_21legs.jpg", "images/w_22hw.jpg", "images/w_22hm.jpg", "images/w_22w.jpg", "images/w_23hw.jpg", "images/w_26w.jpg", "images/w_27w.jpg", "images/w_28w.jpg", "images/w_29m.jpg", "images/w_30m.jpg", "images/w_31w.jpg", "images/w_31m.jpg", "images/w_32w.jpg", "images/w_33w.jpg", "images/w_34hw.jpg", "images/w_36m.jpg", "images/w_37hm.jpg", "images/w_38w.jpg", "images/w_38m.jpg", "images/w_40m.jpg", "images/w_41m.jpg"];
    var arrAlu = ["images/a_slider.jpg", "images/a_mobile.jpg", "images/a_orizzontale.jpg", "images/a_ombelico.jpg", "images/a_ribbon.jpg", "images/a_oyster.jpg", "images/a_tavoloquadro.jpg", "images/a_acrobat.jpg", "images/a_acrobatslim.jpg", "images/a_reedpylon.jpg", "images/a_stylo.jpg", "images/a_autopole.jpg", "images/a_box.jpg", "images/a_frame.jpg", "images/a_merchandisers.jpg", "images/a_signage.jpg", "images/a_formslighting.jpg"];
    var arrAllgemein =["images/button_foot.gif", "images/button_katalog.gif", "images/contentalt_bg.jpg", "images/contentleftalt_bg.jpg", "images/contentlinks_bg.jpg", "images/folge_bgtyp2.jpg", "images/folge_bgtyp3.jpg", "images/folge_staender.jpg", "images/folge_taylor.jpg", "images/kachel_bg.jpg", "images/linkpfeil.gif", "images/links_bg.jpg", "images/logo.gif", "images/logo_bg.jpg", "images/l_alu.gif", "images/l_taylors.gif", "images/l_window.gif", "images/pfeilvornav1_typ3.gif", "images/pfeilvor_typ1.gif", "images/pfeilvor_typ2.gif", "images/pfeilvor_typ3.gif", "images/pfeilzuruecknav1_typ3.gif", "images/pfeilzurueck_typ1.gif", "images/pfeilzurueck_typ2.gif", "images/pfeilzurueck_typ3.gif", "images/pfeil_typ1.jpg", "images/px.gif", "images/rechts_bg.jpg", "images/starter_alu.jpg", "images/starter_taylors.jpg", "images/starter_window.jpg", "images/Thumbs.db", "images/t_alu.gif", "images/t_taylors.gif", "images/t_window.gif", "images/w_19.jpg", "images/w_20.jpg", "images/w_21.jpg", "images/w_fuss1.jpg", "images/w_fuss2.jpg", "images/w_logo.jpg", "images/w_nav0_bg.jpg", "images/w_nav1_bg.jpg", "images/w_rechts.jpg"];
    
     var strTyp = "";
     if (preloadJakobs.arguments.length > 0) {
         strTyp = preloadJakobs.arguments[0];
     }
    
    if (strTyp == "window" ) {
      preload (arrWindow);    
    }
    if (strTyp == "alu" ) {
      preload (arrAlu);    
    }
    preload (arrAllgemein);
    preload (arrWindow);
    preload (arrAlu);   
}